Highest temperature in Wellington on July 27?

Platform comparison

Market context

Wellington Airport’s warmest reading on 27 July is a **cold-weather temperature bet**, and the market’s **0% YES** implies the crowd sees essentially no chance of a surprisingly high maximum. In practical terms, consensus is that the day should top out in the low-teens Celsius or below, with the real question for a handicapper being not whether it turns hot, but whether there is any late lift from sun, wind easing, or a dry downslope spell that could push the airport reading into a higher band than the market currently prices. July climatology in Wellington is firmly winter-like, with persistent cloud, no muggy conditions, and average wind around 9.6 mph, all of which usually cap daytime heating.[1]

Historically, that makes the favourite the cooler outcome and the underdog any unusually mild reading. A zero-per-cent price is often a sign the market has either overcorrected for the season or is treating the event as mechanically settled towards the lowest likely bins, which can leave value on contrarian warmer ranges if the synoptic setup turns clear and breezy in a way that favours brief spikes in maximum temperature. For comparison, other Wellington July temperature markets have tended to cluster around the 11–13°C area rather than anything summer-like, which is the main reason the current consensus looks firmly anchored to the cold side.[2]

For catalysts, traders should watch the local forecast evolution for cloud cover, wind shifts, and any passing frontal activity that could suppress or release daytime heating at Wellington International Airport. The resolution is tied to the airport station’s recorded maximum on the calendar day, so the only live drivers are weather conditions and any late-data revisions before the next day’s first datapoint is published.[2]

Sources: 1 · 2

Methodology

We track Highest temperature in Wellington on July 27? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.